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