One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,12)(6,7)(8,10)(9,14)(11,15)(13,16)(17,18,21,24)(19,25,27,22)(20,23,30,28)(26,32,29,31)(33,34,38,39)(35,40,36,41)(37,42,46,45)(43,47,44,48)(2,7)(3,10)(9,12)(11,16)(17,18)(19,22)(20,23)(21,24)(25,27)(26,31)(28,30)(29,32)(34,39)(40,41)(42,45)(47,48) involution — undirected(1,3)(2,8)(4,11)(5,7)(6,10)(9,15)(12,13)(14,16)(17,18)(19,22)(20,23)(21,24)(25,27)(26,31)(28,30)(29,32)(33,35,38,36)(34,40,39,41)(37,43,46,44)(42,47,45,48)(1,3)(2,8)(4,11)(5,7)(6,10)(9,15)(12,13)(14,16)(17,18)(19,22)(20,28)(21,24)(23,30)(25,27)(26,32)(29,31)(33,34)(35,40)(36,41)(37,45)(38,39)(42,46)(43,48)(44,47) involution — undirected(1,4,6,14)(2,9,7,12)(3,11,10,16)(5,13,8,15)(17,19,21,27)(18,22,24,25)(20,29,30,26)(23,32,28,31)(33,36,38,35)(34,41,39,40)(37,43,46,44)(42,47,45,48)(1,5,6,8)(2,3,7,10)(4,13,14,15)(9,11,12,16)(17,20,21,30)(18,23,24,28)(19,26,27,29)(22,31,25,32)(33,37)(34,42)(35,43)(36,44)(38,46)(39,45)(40,47)(41,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.