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