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