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