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