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)(17,18,21,22)(19,23,27,25)(20,24,29,30)(26,31,28,32)(33,34,38,41)(35,42,37,39)(36,40,45,48)(43,47,44,46)(2,7)(3,12)(4,10)(14,15)(17,18,21,22)(19,25,27,23)(20,24,29,30)(26,32,28,31)(33,35,38,37)(34,39,41,42)(36,44,45,43)(40,47,48,46)(2,7)(4,10)(8,11)(13,16)(18,22)(23,25)(24,30)(31,32)(36,45)(40,48)(43,44)(46,47) involution — undirected(1,3,6,12)(2,8,7,11)(4,13,10,16)(5,15,9,14)(17,19,21,27)(18,23,22,25)(20,28,29,26)(24,32,30,31)(33,34)(35,39)(36,40)(37,42)(38,41)(43,46)(44,47)(45,48)(1,4,6,10)(2,9,7,5)(3,13,12,16)(8,14,11,15)(17,18)(19,23)(20,24)(21,22)(25,27)(26,31)(28,32)(29,30)(33,36,38,45)(34,40,41,48)(35,43,37,44)(39,46,42,47)(1,5,6,9)(2,10,7,4)(3,14,12,15)(8,13,11,16)(17,20,21,29)(18,24,22,30)(19,26,27,28)(23,31,25,32)(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.