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