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