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