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