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