One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,5)(6,7)(9,13)(10,16)(11,14)(12,15)(17,18)(19,22)(20,23)(21,24)(25,27)(26,29)(28,30)(31,32)(33,34)(35,40)(36,46)(37,41)(38,42)(39,43)(44,48)(45,47) involution — undirected(2,7)(4,13)(8,15)(10,14)(17,18,21,24)(19,25,27,22)(20,23,28,30)(26,31,32,29)(33,35)(34,40)(36,38)(37,47)(39,44)(41,45)(42,46)(43,48)(2,7)(5,9)(8,15)(11,16)(20,28)(23,30)(26,32)(29,31)(35,44)(38,45)(40,48)(42,47) involution — undirected(1,3,6,12)(2,8,7,15)(4,14,13,10)(5,11,9,16)(17,18)(19,25)(20,23)(21,24)(22,27)(26,31)(28,30)(29,32)(33,36)(34,37)(35,45)(38,44)(39,41)(40,42)(43,46)(47,48)(1,4)(2,9)(3,10)(5,7)(6,13)(8,11)(12,14)(15,16)(17,19,21,27)(18,22,24,25)(20,26,28,32)(23,29,30,31)(33,37)(34,41)(35,42)(36,43)(38,40)(39,46)(44,47)(45,48)(1,5,6,9)(2,4,7,13)(3,11,12,16)(8,14,15,10)(17,20,21,28)(18,23,24,30)(19,26,27,32)(22,29,25,31)(33,38,39,45)(34,42,43,47)(35,36,44,41)(37,40,46,48)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.