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