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