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