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