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