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