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