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